Gas exchange in the salt marsh species Atriplex portulacoides L. and Limoniastrum monopetalum L. in Southern Portugal

Salt marshes are ecosystems subjected to a variety of environmental stresses like high salinity, water deficit, intense radiation or high temperatures. Field measurements were conduced in two halophyte species, Atriplex portulacoides L. and Limoniastrum monopetalum L., in the Reserva Natural do Sapal de Castro Marim, to compare their physiological response, i.e., water potential (w), net photosynthetic rate (A), stomatal conductance (gs) under natural conditions. Both species demonstrated marked variations in w throughout the year, with very low values in the summer, the period of higher salinity, drought and temperature. Deficit water potential (Dw = wmidday wpredawn) was lower in the summer than in other seasons in A. portulacoides but not in L. monopetalum. The highest values for A and gs in L. monopetalum were observed in autumn and for A. portulacoides in winter, presenting both lowest values in spring and summer. Amax was particularly high for L. monopetalum than for A. portulacoides in summer and autumn, despite gsmax was similar in both species. Diurnal pattern ofAand gs were similar in both species, with higher values in the morning, decreasing throughout the day

Infection By The Human Papillomavirus In Teenagers Sexually Active: Clinic And Subclinic Manifestations.

This research studies the association of the cervical condyloma with the intraepithelial neoplasia, during sex activity, pregnancy, diagnose methods, cytology and colposcopy in teenagers. The objective of this research is to study the propaedeutics for the uterine coli condyloma diagnose in a group of teenagers. For this purpose, we have studied 131 teenagers sexually active with ages between 14 and 19 years and presenting histologically confirmed uterine coli condyloma. Association with intraepithelial neoplasia, sexual activity duration, method of diagnose, pregnancy analysis, cytology and colposcopy results and association with vulva and vagina injuries were evaluated. The high association rate with condyloma and intraepithelial neoplasia after a short time of sexual activity and the none presence of macroscopic warts in the genital organs in 80% of cases presenting cervical condyloma, demonstrate that: a more careful investigation with colposcopy and biopsy of the inferior genitals of the women-teenagers sexually active is needed, when presenting modified cervical cytology.113494895

VIABILIDADE DO SÊMEN OVINO REFRIGERADO EM DIFERENTES DILUENTES

O presente trabalho objetivou comparar a eficiência in vitro de 6 diluentes na conservação de sêmen ovino à temperatura de 5ºC por 8 horas. Foram utilizados 3 carneiros da raça Suffolk e constituídos 23 homogeneizados de sêmen. Cada homogeneizado era dividido em 6 alíquotas, nas quais acresciam-se os diluentes: Cornell University Extender (CUE), Cornell University 16 (CU-16), glicina-gema (GG), citrato-gema (CG), TRIS-gema (TG) e leite desnatado UHT-gema (LG). O sêmen foi refrigerado através da redução da temperatura de 30ºC para 5ºC em 120 minutos, em caixa de poliestireno espandido contendo gelo. Após 8 horas de refrigeração o sêmen diluído foi submetido a análise de turbilhonamento, motilidade progressiva, vigor, morfologia espermática, e ao teste de termo-resistência (TT) a 38ºC por 4 horas. Considerando os valores transformados de motilidade progressiva, turbilhonamento e vigor pelo modelo estatístico de Componentes Principais, o diluente CG apresentou resultados superiores. Os diluentes CUE, CU-16, TG e LG não diferiram entre si e o GG foi inferior (

Measurement of the absolute reflectance of polytetrafluoroethylene (PTFE) immersed in liquid xenon

The performance of a detector using liquid xenon (LXe) as a scintillator is strongly dependent on the collection efficiency for xenon scintillation light, which in turn is critically dependent on the reflectance of the surfaces that surround the active volume. To improve the light collection in such detectors the active volume is usually surrounded by polytetrafluoroethylene (PTFE) reflector panels, used due to its very high reflectance—even at the short wavelength of scintillation light of LXe (peaked at 178 nm). In this work, which contributed to the overall R&D effort towards the LUX-ZEPLIN (LZ) experiment, we present experimental results for the absolute reflectance measurements of three different PTFE samples (including the material used in the LUX detector) immersed in LXe for its scintillation light. The obtained results show that very high bi-hemispherical reflectance values (≥ 97%) can be achieved, enabling very low energy thresholds in liquid xenon scintillator-based detectors.Peer Reviewe

Insights into corrosion behaviour of uncoated Mg alloys for biomedical applications in different aqueous media

MgCa and MgGd series of alloys are often reported as promising candidates for biomedical applications. In the present study, cytotoxicity and corrosion behavior of Mg1Ca and Mg10Gd alloys in different electrolytes (NaCl, PBS, MEM) have been investigated in order to make a direct comparison and understand the mechanisms behind their performance. Potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) were employed to analyze corrosion processes depending on media composition, whereas X-Ray diffraction (XRD) and scanning electron microscopy (SEM) were used to evaluate crystalline structure, phase composition and surface morphology of the corroded substrates after immersion in the different electrolytes. Moreover, cytotoxicity of the Mg alloys was assessed using the WST-1 reduction and lactate dehydrogenase (LDH) release assays in L929 mouse fibroblasts. The electrochemical results showed that Mg1Ca has a lower degradation rate when compared to Mg10Gd, due to the lower microgalvanic effects and the presence of Ca as an alloying element. Furthermore, the corrosion activity is reduced in MEM, for both alloys, when compared to NaCl and PBS. The cytotoxicity assays revealed that Mg10Gd was cytotoxic in all the conditions tested, while the toxicity of Mg1Ca was low. Overall, these findings show that Mg1Ca alloy presents a higher corrosion resistance and biocompatibility and is a promising material to be used in biomedical implants.This work was financed by Portugal 2020 through European Regional Development Fund (ERDF) in the frame of Operational Competitiveness and Internationalization Programme (POCI), in the scope of the project MAGICOAT POCI-01-0145-FEDER016597/PTDC/CTM-BIO/2170/2014 and in the scope of the project CICECO - Aveiro Institute of Materials, UIDB/50011/2020 & UIDP/50011/2020, financed by national funds through the Portuguese Foundation for Science and Technology/ MCTES. Furthermore, thanks are due to Portuguese Foundation for Science and Technology/MCTES for the financial support through national funds to EPI Unit (UIDB/04750/2020).info:eu-repo/semantics/publishedVersio

Evaluation Of Gasometric Parameters In Trauma Patients During Mobile Prehospital Care [avaliação Dos Parâmetros Gasométricos Dos Traumatizados Durante O Atendimento Pré-hospitalar Móvel]

Objective: To evaluate gasometric differences of severe trauma patients requiring intubation in prehospital care. Methods: Patients requiring airway management were submitted to collection of arterial blood samples at the beginning of pre-hospital care and at arrival at the Emergency Room. We analyzed: Glasgow Coma Scale, respiratory rate, arterial pH, arterial partial pressure of CO2 (PaCO2), arterial partial pressure of O2 (PaO2), base excess (BE), hemoglobin O2 saturation (SpO2) and the relation of PaO2 and inspired O2 (PaO2/FiO2). Results: There was statistical significance of the mean differences between the data collected at the site of the accident and at the entrance of the ER as for respiratory rate (p = 0.0181), Glasgow Coma Scale (p = 0.0084), PaO2 (p <0.0001) and SpO2 (p = 0.0018). Conclusion: tracheal intubation changes the parameters PaO2 and SpO2. There was no difference in metabolic parameters (pH, bicarbonate and base excess). In the analysis of blood gas parameters between survivors and non-survivors there was statistical difference between PaO2, hemoglobin oxygen saturation and base excess.404293299Gonsaga, R.A., Brugugnolli, I.D., Fraga, G.P., Comparison between two mobile pre-hospital care services for trauma patients (2012) Word J Emerg Surg., 7 (SUPPL. 1), pp. S6Pereira Júnior, G.A., Carvalho, J.B., Ponte Filho, A.D., Malzone, D.A., Pedersoli, C.E., Transporte intra-hospitalar do paciente crítico (2007) Medicina., 40 (4), pp. 500-508Kue, R., Brown, P., Ness, C., Scheulen, J., Adverse clinical events during intrahospital transport by a specialized team: A preliminary report (2011) Am J Crit Care., 20 (2), pp. 153-161Lima Junior, N.A., Bacelar, S.C., Japiassú, A.M., Cader, S.A., Lima, R.C.F., Dantas, E.H.M., Gasometria arterial em dois diferentes métodos de transporte intra-hospitalar no pós-operatório imediato de cirurgia cardíaca (2012) Rev bras ter intensiva., 24 (2), pp. 162-166Waydhas, C., Schneck, G., Duswald, K.H., Deterioration of respiratory function after intra-hospital transport of critically ill surgical patients (1995) Intensive Care Med., 21 (10), pp. 784-789Zuchelo, L.T.S., Chiavone, P.A., Transporte intra-hospitalar de pacientes sob ventilação invasiva: Repercussões cardiorrespiratórias e eventos adversos (2009) J bras pneumol., 35 (4), pp. 367-374Gervais, H.W., Eberle, B., Konietzke, D., Hennes, H.J., Dick, W., Comparison of blood gases of ventilated patients during transport (1987) Crit Care Med., 15 (8), pp. 761-763Wildner, G., Pauker, N., Archan, S., Gemes, G., Rigaud, M., Pocivalnik, M., Arterial line in prehospital emergency settings-A feasibility study in four physician-staffed emergency medical systems (2011) Resuscitation., 82 (9), pp. 1198-1201Schmelzer, T.M., Perron, A.D., Thomason, M.H., Sing, R.F., A comparison of central venous and arterial base deficit as a predictor of survival in acute trauma (2008) Am J Emerg Med., 26 (2), pp. 119-123Bilello, J.F., Davis, J.W., Lemaster, D., Townsend, R.N., Parks, S.N., Sue, L.P., Prehospital hypotension in blunt trauma: Identifying the "crump factor" (2011) J Trauma., 70 (5), pp. 1038-1042(2012) Atendimento pré-hospitalar ao traumatizado, PHTLS / NAEMT, , Tradução do original Prehospital trauma life support, por Renata Scavone, et al. 7a ed. Rio de Janeiro: ElsevierFraga, G.P., Mantovani, M., Magna, L.A., Índices de trauma em pacientes submetidos à laparotomia (2004) Rev Col Bras Cir., 31 (5), pp. 299-306Barros, M.D.A., Ximenes, R., Lima, M.L.C., Mortalidade por causas externas em crianças e adolescentes: Tendência de 1979 a 1995 (2001) Rev Saúde Pública., 35 (2), pp. 142-149Gonsaga, R.A.T., Rimoli, C.F., Pires, E.A., Zogheib, F.S., Fujino, M.V.T., Cunha, M.B., Avaliação da mortalidade por causas externas (2012) Rev Col Bras Cir., 39 (4), pp. 263-267Batista, S.E.A., Baccani, J.G., Silva, R.A.P., Gualda, K.P.F., Vianna Junior, R.J.A., Análise comparativa entre os mecanismos de trauma, as lesões e o perfil de gravidade das vítimas, em Catanduva-SP (2006) Rev Col Bras Cir., 33 (1), pp. 6-10Carrasco, C.E., Godinho, M., Berti de Azevedo Barros, M., Rizoli, S., Fraga, G.P., Fatal motorcycle crashes: A serious public health problem in Brazil (2012) World J Emerg Surg., 7 (SUPPL. 1), pp. S5Marín-León, L., Belon, A.P., Barros, M.B.A., Almeida, S.D.M., Restitutti, M.C., Tendênica dos acidentes de trânsito em Campinas, São paulo, Brasil: Importância crescente dos motociclistas (2012) Cad Saúde Pública., 28 (1), pp. 39-51Jousi, M., Reitala, J., Lund, V., Katila, A., Leppäniemi, A., The role of prehospital blood gas analysis in trauma resuscitation (2010) World J Emerg Surg., 5, p. 10Martin, M., Oh, J., Currier, H., Tai, N., Beekley, A., Eckert, M., An analysis of in-hospital deaths at a modern combat support hospital (2009) J Trauma., 66 (4 SUPPL.), pp. S51-S60. , discussion S60-1Ouellet, J.F., Roberts, D.J., Tiruta, C., Kirkpatrick, A.W., Mercado, M., Trottier, V., Admission base deficit and lactate levels in Canadian patients with blunt trauma: Are they useful markers of mortality? (2012) J Trauma Acute Care Surg., 72 (6), pp. 1532-1535Darlington, D.N., Kheirabadi, B.S., Delgado, A.V., Scherer, M.R., Martini, W.Z., Dubick, M.A., Coagulation changes to systemic acidosis and bicarbonate correction in swine (2011) J Trauma., 71 (5), pp. 1271-1277Rudkin, S.E., Kahn, C.A., Oman, J.A., Dolich, M.O., Lotfipour, S., Lush, S., Prospective correlation of arterial vs venous blood gas measurements in trauma patients (2012) Am J Emerg Med., 30 (8), pp. 1371-1377Hussmann, B., Lefering, R., Waydhas, C., Ruchholtz, S., Wafaisade, A., Kauther, M.D., Prehospital intubation of the moderately injured patient: A cause of morbidity? A matched-pairs analysis of 1,200 patients from the DGU Trauma Registry (2011) Crit Care., 15 (5), pp. R207Park, M., Costa, E.L.V., McIel, A.T., Hirota, A.S., Vasconcelos, E., Azevedo, L.C.P., Alterações hemodinâmicas, respiratórias e metabólicas agudas após o contato do sangue com o circuito extracorpóreo da ECMO: Estudo experimental (2012) Rev bras ter intensiva., 24 (2), pp. 137-14

Consumer perception of Brazilian traced beef

The objective of this study was to determine consumers understanding of beef traceability, identifying how consumers value this meat and traceability elements to be presented on retail shelves. The method used in this study was a survey through the internet applying the Sphinx software. The sample consisted of 417 consumers, mostly living in Porto Alegre, Brazil. Consumers are aware of certified beef, consider it important, but this is not a demand. As to traced beef, most consumers (62.4%) are in favor of mandatory traceability of beef cattle in Brazil, but 86.6% disagree with the destination of traced beef only to the foreign market. The majority of people are willing to pay more for traced beef and consider traceability a market opportunity, used as a differentiating tool

Structural dynamics and physicochemical properties of pDNA/DODAB:MO lipoplexes : effect of pH and anionic lipids in inverted non-lamellar phases versus lamellar phases

Dioctadecyldimethylammoniumbromide (DODAB):Monoolein (MO) lipoplexes have mainly been studied within the range of high molar ratios of DODAB, with noticeable transfection efficiencies in the Human Embryonic Kidney (HEK, a.k.a. 293T) cell line. In thiswork,we intend to study the effect of highMOcontent on the structure and physicochemical properties of pDNA/DODAB:MOlipoplexes to achieve some correlationwith their transfection efficiency. Static/Dynamic Light Scattering and Cryo-TEM imaging were used to characterize the size/ morphology of DNA/DODAB:MO lipoplexes at different DODAB:MO contents (2:1, 1:1, 1:2) and charge ratios (CRs) (+/−). Nile Red fluorescence emission was performed to detect changes in microviscosity, hydration and polarity of DNA/DODAB:MO systems. Lipoplexes stability at physiological pH values and in the presence of anionic lipids was evaluated by Förster Resonance Energy Transfer (FRET). Physicochemical/structural data were complemented with transfection studies in HEK cells using the β-galactosidase reporter gene activity assay. This work reports the coexistence of multilamellar and non-lamellar inverted phases in MO-richer lipoplexes (DODAB:MO 1:2 and 1:4), leading to transfection efficiencies comparable to those of multilamellar (DODAB-richer) lipoplexes, but at higher charge ratios [CR (+/−) = 6.0] and without dose-effect response. These results may be related to the structural changes of lipoplexes promoted by high MO content.FEDER (037291) through POFC — COMPETEFundação para a Ciência e a Tecnologia (FCT) - SFRH/BD/46968/2009 (PhD grant), PEst-C/BIA/UI4050/2011(CBMA), PEst-C/FIS/UI0607/2011 (CFUM)

Relative expression of mRNAs related to cavitation process in bovine embryos produced in vivo and in vitro

The objectives of this work were to identify and to evaluate possible differences on gene expression of aquaporins and Na/K-ATPases transcripts between embryos in vivo and in vitro produced. For each group, 15 blastocysts distributed in three pools were used for RNA extraction followed by amplification and reverse transcription. The resulting cDNAs were submitted to Real-Time PCR, using the GAPDH gene as endogenous control. It was not possible to identify AQP1 transcripts. Relative expression of AQP3 (1.33 ± 0.78) and AQP11 (2.00 ± 1.42) were not different in blastocysts in vitro and in vivo produced. Na/K-ATPase α1 gene (2.25 ± 1.07) was overregulated whereas Na/K-ATPase β2 transcripts 0.40 ± 0.30) did not differ among blastocysts produced in vitro from those produced in vivo. Transcripts for gene AQP1 are not present in bovine blastocysts. In vitro culture system does not alter expression of genes AQP3, AQP11 and Na/K-ATPase β2 genes, however, it affects expression of Na/K-ATPase α1.Os objetivos neste trabalho foram identificar e avaliar possíveis diferenças na expressão gênica de transcritos de Aquaporina e ATPases-Na/K presentes em embriões produzidos in vivo e in vitro. Para cada grupo, 15 blastocistos distribuídos em três conjuntos foram utilizados para a extração do RNA, seguida da amplificação e da transcrição reversa. Os DNAs complementares foram submetidos à reação em cadeia da enzima polimerase em tempo real, utilizando-se o gene GAPDH como controle endógeno. Não foi possível identificar transcritos de AQP1. A expressão relativa dos genes AQP3 (1,33 ± 0,78) e AQP11 (2,00 ± 1,42) não foi diferente em blastocistos produzidos in vitro e in vivo. O gene ATPase-Na/K α1 (2,25 ± 1,07) encontrou-se sobrerregulado, enquanto o gene ATPase-Na/K β2 (0,40 ± 0,30) não diferiu entre os blastocistos produzidos in vitro e aqueles produzidos in vivo. Transcritos para o gene AQP1 não estão presentes em blastocistos bovinos. O sistema de cultivo in vitro não influencia a expressão dos genes AQP3, AQP11 e ATPase-Na/K β2, porém altera a expressão do gene ATPase-Na/K α1